Disturbance_module.cc

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// framework libraries
#include "art/Framework/Core/EDProducer.h"
#include "art/Framework/Core/ModuleMacros.h"
#include "canvas/Utilities/Exception.h"
#include "messagefacility/MessageLogger/MessageLogger.h"
#include "fhiclcpp/types/Atom.h"


namespace lar {
  namespace example {
    
    class Disturbance: public art::EDProducer {
        public:
      
      struct Config {
        
        fhicl::Atom<unsigned int> NArtExceptions {
          fhicl::Name("NArtExceptions"),
          fhicl::Comment("number of exceptions to throw")
          };
        
      }; // struct Config
      
      using Parameters = art::EDProducer::Table<Config>;
      
      Disturbance(Parameters const& config);
      
      virtual void produce(art::Event&) override;
      
      
        private:
      
      unsigned int fNArtExceptions;
      
      static void throwArtException();
      
    }; // class Disturbance
    
    
  } // namespace example
} // namespace lar

//------------------------------------------------------------------------------
lar::example::Disturbance::Disturbance(Parameters const& config)
  : fNArtExceptions(config().NArtExceptions())
  {}


//------------------------------------------------------------------------------
void lar::example::Disturbance::produce(art::Event&) {
  
  //
  // art::Exception
  //
  for (unsigned int i = 0; i < fNArtExceptions; ++i) {
    try {
      throwArtException();
    }
    catch (art::Exception const&) {}
  } // for
  
} // lar::example::Disturbance::produce()


//------------------------------------------------------------------------------
void lar::example::Disturbance::throwArtException() {
  
  throw art::Exception(art::errors::LogicError)
    << "I want to annoy you.\n";
  
} // lar::example::Disturbance::throwArtException()


//------------------------------------------------------------------------------
DEFINE_ART_MODULE(lar::example::Disturbance)


//------------------------------------------------------------------------------